Question

What is the z-value of the solutions to the following system of equations?

x+y-z=0
x -2z=-1
2x+2y+z=9

Answer 1

z=3

Answer 2

x=5

Answer 3

Thank you!

Answer 4

@brittany1696 2x+2y+z=9 and -2(x+y-z)=0,after we will get 3z=9 then z=3, x-6=-1 so x=5 , so 5+y-3=0 so y=-2